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From: Xianting Tian <xianting.tian@linux.alibaba.com>
To: gregkh@linuxfoundation.org, jirislaby@kernel.org,
	amit@kernel.org, arnd@arndb.de, osandov@fb.com
Cc: shile.zhang@linux.alibaba.com, linuxppc-dev@lists.ozlabs.org,
	virtualization@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org,
	Xianting Tian <xianting.tian@linux.alibaba.com>
Subject: [PATCH v10 1/3] tty: hvc: use correct dma alignment size
Date: Sat,  9 Oct 2021 19:48:27 +0800	[thread overview]
Message-ID: <20211009114829.1071021-2-xianting.tian@linux.alibaba.com> (raw)
In-Reply-To: <20211009114829.1071021-1-xianting.tian@linux.alibaba.com>

Use L1_CACHE_BYTES as the dma alignment size, use 'sizeof(long)'
is wrong.

Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Reviewed-by: Shile Zhang <shile.zhang@linux.alibaba.com>
---
 drivers/tty/hvc/hvc_console.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 5bb8c4e44..5957ab728 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -49,7 +49,7 @@
 #define N_OUTBUF	16
 #define N_INBUF		16
 
-#define __ALIGNED__ __attribute__((__aligned__(sizeof(long))))
+#define __ALIGNED__ __attribute__((__aligned__(L1_CACHE_BYTES)))
 
 static struct tty_driver *hvc_driver;
 static struct task_struct *hvc_task;
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Xianting Tian <xianting.tian@linux.alibaba.com>
To: gregkh@linuxfoundation.org, jirislaby@kernel.org,
	amit@kernel.org, arnd@arndb.de, osandov@fb.com
Cc: Xianting Tian <xianting.tian@linux.alibaba.com>,
	shile.zhang@linux.alibaba.com, linuxppc-dev@lists.ozlabs.org,
	linux-kernel@vger.kernel.org,
	virtualization@lists.linux-foundation.org
Subject: [PATCH v10 1/3] tty: hvc: use correct dma alignment size
Date: Sat,  9 Oct 2021 19:48:27 +0800	[thread overview]
Message-ID: <20211009114829.1071021-2-xianting.tian@linux.alibaba.com> (raw)
In-Reply-To: <20211009114829.1071021-1-xianting.tian@linux.alibaba.com>

Use L1_CACHE_BYTES as the dma alignment size, use 'sizeof(long)'
is wrong.

Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Reviewed-by: Shile Zhang <shile.zhang@linux.alibaba.com>
---
 drivers/tty/hvc/hvc_console.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 5bb8c4e44..5957ab728 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -49,7 +49,7 @@
 #define N_OUTBUF	16
 #define N_INBUF		16
 
-#define __ALIGNED__ __attribute__((__aligned__(sizeof(long))))
+#define __ALIGNED__ __attribute__((__aligned__(L1_CACHE_BYTES)))
 
 static struct tty_driver *hvc_driver;
 static struct task_struct *hvc_task;
-- 
2.17.1


  reply	other threads:[~2021-10-09 11:48 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-09 11:48 [PATCH v10 0/3] make hvc pass dma capable memory to its backend Xianting Tian
2021-10-09 11:48 ` Xianting Tian
2021-10-09 11:48 ` Xianting Tian [this message]
2021-10-09 11:48   ` [PATCH v10 1/3] tty: hvc: use correct dma alignment size Xianting Tian
2021-10-09 11:48 ` [PATCH v10 2/3] tty: hvc: pass DMA capable memory to put_chars() Xianting Tian
2021-10-09 11:48   ` Xianting Tian
2021-10-09 11:55   ` Greg KH
2021-10-09 11:55     ` Greg KH
2021-10-09 11:55     ` Greg KH
2021-10-09 11:58   ` Greg KH
2021-10-09 11:58     ` Greg KH
2021-10-09 11:58     ` Greg KH
2021-10-09 15:45     ` Xianting Tian
2021-10-09 15:45       ` Xianting Tian
2021-10-10  5:33       ` Greg KH
2021-10-10  5:33         ` Greg KH
2021-10-10  5:33         ` Greg KH
2021-10-14  8:34         ` Xianting Tian
2021-10-14  8:34           ` Xianting Tian
2021-10-14  8:41           ` Greg KH
2021-10-14  8:41             ` Greg KH
2021-10-14  8:41             ` Greg KH
2021-10-14  8:56             ` Xianting Tian
2021-10-14  8:56               ` Xianting Tian
2021-10-09 11:48 ` [PATCH v10 3/3] virtio-console: remove unnecessary kmemdup() Xianting Tian
2021-10-09 11:48   ` Xianting Tian

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